Melville



(No Model.)

' V M. G. HAWLEY.

HEATING STOVE.

Paten ted Nov. 15,1881.

UNITED STATES AENT OFFICE.

MELVILLE O. HAWLEY, OF ST. LOUIS ,MISSOURI, ASSIGNOR TO THE BRIDGEANDBEAOH MANUFACTURING COMPANY, OF SAME PLACE.

HEATI NG-STOVE.

SPECIFICATION forming part of Letters Patent No. 249,617, dated November15, 1881.

To all whom it may concern Be it known that I, MELVILLE O. HAWLEY, ofSt. Louis, Missouri, have made a new and useful Improvement in HeatingStoves, of

which the following is a full, clear, and exact description, referencebeing bad to the annexed drawings, making part of this specification, inwhich- 7 Figure l is a side elevation, half in section,

[0 of the improved stove; Fig. 2, a vertical section taken on the linea: w of Fig. 3, and Fig. 3 a horizontal section taken on the line 00 wof Fig. 1.

The same letters denote the same parts.

I haye heretofore, May 7, 1878, and jointly with another person,patented an improvement in heating-stoves. In the construction referredto the products of combustion are carried downward through thefire-chamber, past the grate into the ash-pit, and thence to the escape.

The present construction is an improvement upon the one above named, andit relates partly to the means used in directing the course of 2 theproducts of combustion, partly to the shape of the corrugations or ribsupon the inner side of the shell of the fire-chamber, and partly to theconstruction of the grate or bottom of the fire-chamber and the partsimmediately there- 0 with connected.

The improvement may be carried out in con nection with any of theordinary direct-draft stoves. That shown in the drawings is of the usualcannon-stove type, having the ash-pit A, the fire-pot B, and thecombustion-chamber 0, all of the customary form, saving as modified bythe present improvement. I

1) represents a damper constructed to close, when desired, and, ashereinafter explained,

4.0 the exit leading from'the combustion-chamber G to the direct draft.As shown, the damper is arranged directly over the chamber 0, and thedirect draft is from the chamber 0 upward into a chamber or drum, E,directly above the 5 chamber 0. The particular mode of arranging andconducting the direct draft from the combustion-chamber and stove,however, is immaterial to my present purpose, it only being essential,in this part of the stove, to pro- Application filed August 13, 1881.(No model.)

vide for cutting off the direct draft and for directing the products ofcombustion downward through the fire-pot, when desired.

F represents a flue leading from the ash-pit A, and at its upper endconnecting with the escape at a point above or beyond the damper 5, D.The especial manner of connecting the flue F with the escape need not bespecified, saving-that it must connect therewith at a point or pointsabove or beyond the damper D, and it may connect either with the finales- 6 cape Gr or with the stove at a point or points between thelocation of the damperD and the escape G. As theconstruction of thatportion of the stove which is above or beyond the exit from thecombustion-chamber varies in differ- 6 cut stoves, the mode of unitingthe upper end of the flue F therewith may correspondingly vary.

H H H represent the ribs upon the inner side of the fire-pot shell I).In place of being 7c of uniform depth throughout their length, as in theoriginal construction, they are made deeper at their lower ends, h h. Inproducing this increased depth the inner edges, 71/, of the ribs arepreferably curved, as shown. The 7 5 aim and efl'ect of constructing theribs as described is to enlarge the annular space at the bottom of thefire-pot and provide a freer opening for the escape of the products ofcombustion when the latter are being directed down- 8c ward through thefire-pot. This is desirable in view of the fact that the ashes collectmore at and near the bottom of the fire-pot.

I represents the bottom of the fire-pot or the grate. It is made hollow,as before, and a hollow arm, i,"serves both for a handle to the grateand as a fine through which air from without the stove can pass into thechamber within the grate, and thence through openings, such as i,outward into the space without the grate. The latter turns on a pivot,J, that is upon a crosstube, K. This tube extends across the ash-pit toand through the sides thereof, providing thereby fines through which aircan circulate. The tube has an opening or openings, such as at 5 k,through which the air passes from the tube intotheash-pitorstove.Thetube,however,isnot' connected with the interior of the grate, as itis undesirable to admit heated air therein, the only air admitted intothe chamber within the grate being the cool air-current enteringdirectly through the hollow handle 2'. In this manner both the grate andthe grate-support are kept from burning out, and at the same I time airis supplied to the burning products of combustion and to the fire, inaddition to that which enters through the register L or M. The grate Ihas projections 2' which help to support the fuel above, but in suchmanner, by reason of the spaces between the projections,as toincreasethe opening through which the products of combustion are directed whenthe indirect draft is in use.

The operation of the improvement is as follows: In starting the fire,and until it is well going, the damper D is opened, as in Fig. 1, andthe direct draft is used, the course of the products of combustion beingas indicated by the arrows in that figure. The air in this case entersthrough the lower register, L. The damper D is then closed, as well asthe register L, and the register M opened. The course of the products ofcombustion is then, as indicated by the arrows in Fig. 2, downwardthrough the fire-pot into the ash-pit, thence into the flue F, andthence to the chamber E above the damper D, and thence to the escape G.In this case the air enters through the register M.

But a single flue, F, is shown. If desired, two or more'flues can beused, and while the flue F, as shown, leads from the ash-pit proper, itmight at its lowerend connect with the interior'of the stove at anypoint below the grate.

I claim-- 1. The fire-pot B, having the ribs H H, said ribs being widestat their lower ends, in combination with the grate I, having theprojections 4?, as and for the purpose described.

2. The combination of the fire-potB, the ashpit A, the flue F, and thehollow grate I, having the hollow arm '5, the openings '5, and theprojections 1?, as and for the purpose described.

3. The combination of the ribbed fire-pot B and the grate I, having theprojectionst' substantially as described.

at. The combination, in a stove, of the ashpit A and the tube K, saidtube not being connected with the interior of the grate I, but havingthe aperture 7r, as and .for the purpose described.

5. The combination of the ash-pit A, firepotB,combustion-chamberO,damperD,chamber E, escape G, and flue F,said damper being arranged atthe extreme top of the combustionchamber 0 and below the chamber E,substantially as described.

6. The combination, in a store, of the ashpit A, the fire-potB, thehollow grate I, having the hollow arm 6, the openings Land thenotches '5the combustion-chamber O, the damper D, and flue F, said flue leadingfrom the ash-pit, or from the stove below the grate, and at its upperend connecting with the stove or escape at a pointor pointsabove orbeyond the damper D, for the purpose described.

'- MELVILLE O. HAWLEY.

Witnesses: I p

O. D.MooDY, CHARLES PIGKLES.

